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A293083
Number of n X 4 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.
1
0, 23, 486, 8108, 126903, 1955375, 30064393, 462569756, 7127871677, 110032675158, 1701716646013, 26365297553133, 409178131040177, 6360241131134572, 99006293076495153, 1543225051401234780, 24083853470118205024
OFFSET
1,2
COMMENTS
Column 4 of A293087.
LINKS
EXAMPLE
Some solutions for n=4
..0..0..0..0. .0..1..0..0. .0..0..0..0. .1..0..0..1. .0..1..1..1
..0..1..0..0. .1..0..1..0. .0..0..1..1. .1..1..0..0. .0..1..0..1
..0..0..1..1. .0..0..1..0. .1..0..1..0. .0..1..0..0. .1..0..0..0
..1..1..0..0. .1..0..1..1. .0..0..1..0. .0..0..1..1. .0..0..1..0
CROSSREFS
Cf. A293087.
Sequence in context: A095256 A273008 A015678 * A014905 A200734 A218715
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 30 2017
STATUS
approved